Suppose a logs mass is 5kg .after burning,the mass of the ash is 1kg .explain what may have happened to the other 4kg

Answers

Answer 1

Answer:
The "missing" 4 kg may have escaped the scene of the fire in the
form of hot gases, and as particles of soot and ash that were seen
leaving in the form of "smoke".

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How do you label acceleration, momentum, speed, force, and velocity?

Answers

i have a a work sheet to do and i have choices for the diffrent words,
A:m
B:s
C:m/s
D:m/s2
E:kg
F:kg m/s
G:N
H:m/s north
so can you help me match the words with there answers

A 0.426 kilogram football is kicked by a punter. If the applied force to the call is 62 Newton’s what is the acceleration of the ball.

Answers

Answer: The acceleration is 145.54 m/s^2

Explanation: The second Newton's law says that:

F = m*a

This says that the Force applied on an object is equal to the mass of the object times the acceleration of the object.

We know that the mass of the ball is 0.426kg and the force is 62N, so we have

62N = 0.426kg*a

a=62N/0.426kg= 145.54 m/s^2

62/.426=a

154.54= acceleration

Which one of the following is a measurement of energy used?A.
24 meters per second

B.
60 milligrams

C.
15 liters

D.
6 joules

Answers

The correct answer to the question is D) 6 joules.

EXPLANATION:

As per the question, four measurements are given i.e 24 m/s, 60 mg, 15 L and 6 J.

We are asked to determine the measurement which corresponds to energy.

Energy is measured in various units like joule, erg, electron volt etc.

Joule is the unit of energy in S.I system.

Hence, the correct measurement which corresponds to energy is 6 joules.

All other measurements like 24 m/s, 60 mg and 15 L are not the measurements of energy. These are the measurements of speed, mass and volume respectively.

D. 6 Joules trust me i work with cars so i have to know this

How does the charge not originate in a battery?

Answers

The charge in a battery does NOT come from tiny tiny men inside the battery turning microscopic electric generators.

What is the function of the phytoplankton in ocean ecosystems? A.
producer

B.
consumer

C.
scavenger

D.
decomposer

Answers

Phytoplankton are plant organisms that live in the upper, sun filled layers of the ocean. The function of the phytoplankton in ocean ecosystems is A. Producer

Why do some asteroids tumble end over end?

Answers

Well, what's the difference between rotating and tumbling anyway ?

I look at it this way:

-- When you walk around and spin a basketball on your finger, it's rotating.

-- When you roll the basketball on the floor, it's tumbling end-over-end.

What's the difference ?

According to the basketball, there's no difference at all.

The difference to US is: Which way is the spin-axis pointing ?

-- If the spin-axis is pointing up-and-down while the ball moves around,
then we say it's rotating. Like the Earth, the Moon, and Mars.

-- If the spin-axis is pointing side-to-side while the ball moves around,
then we say it's tumbling end-over-end. Like Uranus and some asteroids.

To me, all the planets and asteroids are just rotating. But WE have
different descriptions for it when we compare the rotation to the way
they're moving around.

That's my opinion. I could be wrong.

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